Serellion is known to have grown larger than Vhalax, the dragon of Aegor IV during his reign. His scales are as black as coal, and his eyes are a beaming orange, much like his own rider, as if they were created for each other. His claws are as sharp as scythes, and his teeth are easily the length of longswords. His wingspan could cast a shadow over an entire town, much like Gavarex. According to dragon lore, some puportedly written by Aegor I himself, dragons continue to grow if their health is maintained well -- and Serellion was well taken care of.